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    Origin of term "log rising"
    From: Joel Silverberg
    Date: 2007 Jan 03, 11:02 -0800

    I have been working through the tables in the earliest editions of
    Bowditch and am wondering why the "log rising" tables are called that.
    They are basically tables of the logarithms of the versed sine of an
    angle.   The table is entered in hour/minutes/seconds rather than
    degrees/minutes/seconds and the logarithms listed are those of 100000
    times the veresed sine (so that the entries in five-place trig tables
    can be manipulated as whole numbers rather than decimal numbers).  But
    why are they called log-rising tables rather than versed sine tables
    (or sine-squared tables) ?
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